# crack-aspose
**Repository Path**: code_cloud_tiamo/crack-aspose
## Basic Information
- **Project Name**: crack-aspose
- **Description**: javassist 修改 jar 包内的 class 文件,以 aspose-cells-20.7.jar 破解为例(仅供学习,不可用于商业用途)
- **Primary Language**: Java
- **License**: MIT
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No
## Statistics
- **Stars**: 0
- **Forks**: 63
- **Created**: 2022-06-08
- **Last Updated**: 2022-06-08
## Categories & Tags
**Categories**: Uncategorized
**Tags**: None
## README
# aspose-cells-20.7.jar 破解
## 仅供学习,不可用于商业用途
### 一:源代码分析
使用 jd-gui.exe 反编译查看,直接搜索 License

分析代码,有三处代码需要修改
1.修改:
```java
public static boolean isLicenseSet()
{
return a != null;
}
```
为:
```java
public static boolean isLicenseSet()
{
return true;
}
```
2.修改:
```java
public void setLicense(InputStream stream)
{
Document localDocument = null;
if (stream != null) {
try
{
DocumentBuilder localDocumentBuilder = zad.b();
localDocument = localDocumentBuilder.parse(stream);
}
catch (Exception localException1)
{
throw new CellsException(9, zf.a(new byte[] { -20, 93, -23, 54, -20, -49, -59, 86, -9, -86, 49, 44, -59, 71, -52, -86, -90, 6, -90, -25, -86, 1, -1, -92, -91, -126, 7, 113, -66, -95, -121, 16, -122, -126, 7, 104, -40, -70, -10, -37, 126, 7, -111, -121, -121 }) + localException1.getMessage());
}
}
a(localDocument);
}
```
为:
```java
public void setLicense(InputStream paramInputStream)
{
a = new License();
zbiw.a();
}
```
3.修改:
```java
private static Date k(String paramString)
{
if ((paramString == null) || (paramString.length() < 8)) {
return null;
}
SimpleDateFormat localSimpleDateFormat = new SimpleDateFormat(zf.a(new byte[] { 79, 89, 33, -52, 79, -121, -125, 33, 71, -126, 105, -121 }));
try
{
return localSimpleDateFormat.parse(paramString);
}
catch (ParseException localParseException)
{
throw new IllegalArgumentException(zf.a(new byte[] { -21, -113, -77, 13, -115, 27, Byte.MIN_VALUE, 35, 103, -52, -20, -106, 71, 95, 31, -73, -76, -38, 13, 31, -91, -97, -102, 85, -68, -33, -19, -87, -127, -14, 78, -23, 6, -25, -94, 1, -97, -95, -57, -121 }));
}
}
```
为:
```java
private static Date k(String paramString)
{
return new Date(Long.MAX_VALUE);
}
```
### 二.破解,生成 aspose-cells-20.7-crack.jar
修改 class 这里使用 javassist:
新建一个 Spring boot 项目:
pom 文件中引用 javassist
```xml
org.javassist
javassist
3.27.0-GA
```
启动类中创建一个静态方法 crackAspose
```java
public static void crackAspose(String JarPath) throws NotFoundException,CannotCompileException, IOException {
// 这个是得到反编译的池
ClassPool pool = ClassPool.getDefault();
// 取得需要反编译的jar文件,设定路径
pool.insertClassPath(JarPath);
CtClass cc_License = pool.get("com.aspose.cells.License");
CtMethod method_isLicenseSet = cc_License.getDeclaredMethod("isLicenseSet");
method_isLicenseSet.setBody("return true;");
CtClass cc_License2 = pool.get("com.aspose.cells.License");
CtMethod method_setLicense = cc_License2.getDeclaredMethod("setLicense");
method_setLicense.setBody("{ a = new com.aspose.cells.License();\n" +
" com.aspose.cells.zbiw.a();}");
CtMethod method_k = cc_License.getDeclaredMethod("k");
method_k.setBody("return new java.util.Date(Long.MAX_VALUE);");
cc_License.writeFile("C:\\Users\\DYG\\Desktop\\1");
}
```
在 main 方法中执行 crackAspose
```java
try{
crackAspose("C:\\Users\\DYG\\Desktop\\1\\aspose-cells-20.7.jar");
System.out.println("Success!");
}catch (Exception e){
e.printStackTrace();
}
```
运行,在代码中指定的目录下生成一个 class 文件。

复制一个 aspose-cells-20.7.jar 改名为 aspose-cells-20.7-crack.zip 然后解压

把刚才生成的 License.class 文件 替换到解压的源代码中。

造一个 License xml 文件,这里文件名为 com.aspose.cells.lic_2999.xml, 位置直接放源代码解压的根目录:

文件内容为:
```xml
Aspose.Cells for Java
Enterprise
29991231
29991231
evilrule
evilrule
```
防止文件指纹校验,我们需要删除掉源代码解压包中的 META_INF 文件夹。
最后的根目录:

压缩源代码(注意要是 zip 格式)

然后重命名为:
aspose-cells-20.7-crack.jar
破解完成!
三.测试 aspose-cells-20.7-crack.jar 使用
封装一个 License 验证方法:
```java
public static boolean authrolizeLicense() {
boolean result = false;
try {
InputStream is = com.aspose.cells.License.class.getResourceAsStream("/com.aspose.cells.lic_2999.xml");
License asposeLicense = new License();
asposeLicense.setLicense(is);
is.close();
result = true;
} catch (Exception e) {
e.printStackTrace();
}
return result;
}
```
修改 main 方法测试使用:
```java
public static void main(String[] args) {
SpringApplication.run(CrackAsposeApplication.class, args);
/*
// 修改 License.class
try{
crackAspose("C:\\Users\\DYG\\Desktop\\1\\aspose-cells-20.7.jar");
System.out.println("Success!");
}catch (Exception e){
e.printStackTrace();
}
*/
// 测试破解后的 aspose-cells-20.7-crack.jar
boolean auth = authrolizeLicense();
if (!auth) {
System.out.println("aspose 许可无效!");
return;
}
System.out.println("aspose 已就绪!");
try{
Workbook wb = new Workbook();
Worksheet ws = wb.getWorksheets().get(0);
for (int i = 0; i < 9; i++)
{
for (int j = 0; j < 9; j++)
{
ws.getCells().get(i,j).setValue((i + 1) + "*" + (j + 1) + "=" + (i + 1) * (j + 1));
}
}
wb.save("C:\\Users\\DYG\\Desktop\\1\\text.xlsx");
}
catch (Exception e){
e.printStackTrace();
}
}
```
运行:

到输出目录下,可以看到 text.xlsx 文件已生成:

文件类容
